UL 5-2016 UL Standard for Safety Surface Metal Raceways and Fittings (Fifteenth Edition).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 5 Surface Metal Raceways and Fittings STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT

2、 AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Surface Metal Raceways and Fittings, UL 5 Fifteenth Edition, Dated May 24, 2016 Summary of Topics This new edition of ANSI/UL 5 includes revisions to the Installation Instructions. The requirem

3、ents are substantially in accordance with Proposal(s) on this subject dated April 1, 2016. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without p

4、rior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or si

5、milar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage e

6、ver exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fe

7、es) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. MAY 24, 2016 UL 5 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 24, 2016 UL 5 tr2 No Text on T

8、his PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 24, 2016 1 UL 5 Standard for Surface Metal Raceways and Fittings First Edition February, 1920 Second Edition April, 1921 Third Edition September, 1925 Fourth Edition December, 1940

9、Fifth Edition March, 1969 Sixth Edition May, 1973 Seventh Edition May, 1977 Eighth Edition March, 1978 Ninth Edition December, 1979 Tenth Edition May, 1985 Eleventh Edition May, 1995 Twelfth Edition October, 1996 Thirteenth Edition February, 2004 Fourteenth Edition September, 2011 Fifteenth Edition

10、May 24, 2016 This ANSI/UL Standard for Safety consists of the Fifteenth Edition. The most recent designation of ANSI/UL 5 as an American National Standard (ANSI) occurred on May 24, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. The Department o

11、f Defense (DoD) has adopted UL 5 on July 9, 1984. The publication of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal

12、Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standa

13、rds shall remain the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 5-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 24, 2016 SURFACE METAL RACEWAYS AND FITTINGS - UL 5 2 No Text on This Pag

14、eUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Components 4 3 Units of Measurement .5 4 Undated References 5 5 Installation .5 6 Nonmetallic Parts .5 7 Glossary .5 CONSTRUCTION 8 General 6 9 Fittings 8 10

15、 Wiring Devices 8 11 Grounding and Bonding 8 12 Specic Materials and Dimensional Limits 9 13 Corrosion Protection 13 13.1 General .13 13.2 Zinc coatings 13 13.3 Nonmetallic coatings 14 14 Ceiling-Suspended Fan Support 14 PERFORMANCE 15 Fixture Support Test 15 16 Ceiling-Suspended Fan Support .15 17

16、Chromic Acid Test for Thicknesses of Zinc Coating .17 18 Rust Resistance Test for Nonmetallic Coatings .19 19 Receptacle Secureness Test .20 20 Security of Knockout and Break-Away Tab Test 20 21 Electrical Resistance Test .20 21.1 Measured on individual pieces .20 21.2 Measured across joints .21 22

17、Fault Current Test 21 23 Short Circuit Test .23 INSTALLATION INSTRUCTIONS 24 Details .23 MARKINGS 25 Details .24 APPENDIX A Standards for ComponentsA1 MAY 24, 2016 SURFACE METAL RACEWAYS AND FITTINGS - UL 5 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERM

18、ISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover surface metal raceways and ttings for use in accordance with the National Electrical Code, NFPA 70. 1.2 Raceways of the following thicknesses are intended to enclose circuits operating at potentials not exceeding 600 volts between cond

19、uctors: a) Raceways that are entirely of metal at least 0.040 inch (1.02 mm) thick nominal and b) Raceways consisting of nonmetallic covers on metal bases of the thickness indicated in (a). Thinner all-metal raceways or raceways of thinner metal bases with nonmetallic covers are intended to enclose

20、circuits operating at potentials lower than 300 volts between conductors. 1.3 These requirements do not cover cable trays, wireways or nonmetallic raceways. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that comp

21、onent. See Appendix A for a list of standards covering components used in the products covered by this standard. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered b

22、y this standard, or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components

23、 are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. MAY 24, 2016 SURFACE METAL RACEWAYS AND FITTINGS - UL 5 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTI

24、ON WITHOUT PERMISSION FROM UL 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall

25、be interpreted as referring to the latest edition of that code or standard. 5 Installation 5.1 The method of installation, as outlined in the instructions accompanying the raceway and ttings, shall be practical and feasible under the conditions met in practice. 5.2 The raceway, ttings and any wiring

26、 devices or accessories are to be installed as intended and examined with regard to the feasibility of installation, as well as for compliance with the construction, performance, and marking requirements in this standard. Attention is to be given to items that require particular care on the part of

27、the raceway installer. 6 Nonmetallic Parts 6.1 A nonmetallic cover, tting or other part of a metal raceway shall comply with the applicable requirements in the Standard for Nonmetallic Surface Raceways and Fittings, UL 5A. 7 Glossary 7.1 For the purposes of this standard, the following denitions app

28、ly: 7.2 ACCESSORY A part that is added to a raceway system for a special purpose (for example, guards, hangers, or retainers). 7.3 BOX, CEILING FAN A box that has been evaluated and determined to be acceptable as the support of a ceiling-suspended (paddle) fan. 7.4 BOX, FIXTURE A box that has been e

29、valuated and determined to be acceptable as the support of a lighting xture, lampholder, or other equipment intended for similar installation. 7.5 FITTING A part used to connect, change direction, or terminate a raceway (for example, a transition coupler, an end cap, a corner, a tee, an adapter, or

30、a box). 7.6 NONMETALLIC A polymeric part. 7.7 RACEWAY, SURFACE METAL A raceway for surface or pendant mounting with a metal base and a metal or nonmetallic cover. MAY 24, 2016 SURFACE METAL RACEWAYS AND FITTINGS - UL 5 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION

31、WITHOUT PERMISSION FROM UL 7.8 RACEWAY SYSTEM A system consisting of a surface metal raceway, associated ttings, and possibly wiring devices and accessories. 7.9 WIRING DEVICE A part of an electrical system that is intended to carry, provide a means of connection to, or control of, electrical energy

32、 within a raceway system (for example, switches or receptacles). CONSTRUCTION 8 General 8.1 A raceway system shall be constructed to facilitate compliance with the requirements for the installation of insulated wires and cables as given in the National Electrical Code, NFPA 70. 8.2 Each element of a

33、 raceway system shall comply with the requirements for the construction, performance, and use of that element. 8.3 A raceway shall consist of one or more pieces formed and constructed to make the raceway readily distinguishable from electrical conduit, electrical metallic tubing, electrical nonmetal

34、lic tubing, and other raceway systems. 8.4 A raceway system shall provide a complete enclosure that protects the wires installed therein against damage. The complete system, when installed as intended, shall comply with the following: a) There shall not be any openings that exceed 1/16 inch (1.59 mm

35、) in width on surfaces that are accessible following installation of the system. b) A knockout or break-away tab shall completely cover the opening in which it is located, and the clearance between the knockout or break-away tab and the opening shall not be more than 0.030 inch (0.76 mm). c) Mountin

36、g holes having a maximum diameter of 9/32 inch (7.1 mm), or slotted openings for mounting of one dimension not larger than 5/8 inch (15.9 mm) and the other dimension not larger than 1/8 inch (3.2 mm), provided on the raceway base or tting base surface that is installed ush with the mounting surface,

37、 are not prohibited. d) A partition in a raceway system shall not have any openings through which wires are capable of being passed, intentionally or otherwise, from one compartment to another. Exception No. 1: A gap of 1/8 inch (3.2 mm) shall be used only when means is provided to completely contai

38、n conductors in their individual compartments, such as wire retaining clips. Exception No. 2: On lengths of surface metal raceway provided with openings that are intended for wiring devices, ttings or accessories, those openings are not required to be blocked by knockouts or break-away tabs where th

39、e installation instructions provided with that surface metal raceway comply with 24.7. MAY 24, 2016 SURFACE METAL RACEWAYS AND FITTINGS - UL 5 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8.5 The interior surface of the raceway system sh

40、all have a smooth nish that is free from projections, sharp edges, burrs, ns, and other faults damaging to wires when installed as intended. 8.6 A raceway shall be provided with means for securing it to the mounting surface at intervals of not more than 4 feet (1.2 m). 8.7 Where the base is intended

41、 to be secured to the mounting surface by screws or bolts extending from the inside, the arrangement shall not result in damage to the conductors. 8.8 Mounting hardware such as screws or bolts shall either be packaged with the raceway, or the installation instructions packaged with the raceway or tt

42、ings shall specify the appropriate mounting means. See 24.3. 8.9 An adhesive strip, when provided on the raceway, shall serve only as a positioning aid during the installation process. The raceway shall also have provisions for mechanical fastening as required in 8.6 8.8. Exception: An adhesive stri

43、p provided on a raceway shall be used as the sole means of securement only when the raceway is marked for use with Class 2 circuits only, as dened in Article 725 of the National Electrical Code, NFPA 70. 8.10 Provision shall be made for securing the cover to the base of a two-piece raceway at interv

44、als of not more than 4 feet (1.2 m). A cover shall be held in place by continuous grooves, anges, or similar constructions only when it is securely xed in place. See 8.12. 8.11 For raceways using conductors larger than 6 AWG (13.30 mm 2 ), the Short Circuit Test, Section 23, shall be performed on co

45、nductors in the raceway to determine whether the cover is secure. 8.12 Raceway or tting covers shall be constructed such that the use of a tool (such as the prying action of a screwdriver) or two simultaneous deliberate actions are required for their removal for gaining access to internal areas of t

46、he raceway after installation. 8.13 A partition provided in a raceway or tting shall be secured in position. The partition shall have the strength required to support the maximum wire ll by weight. MAY 24, 2016 SURFACE METAL RACEWAYS AND FITTINGS - UL 5 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FU

47、RTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 9 Fittings 9.1 A tting provided with means for the support of a xture shall have strength and rigidity for the purpose as evaluated by means of the tests described in the Fixture Support Test, Section 15. A nipple intended only for the co

48、nnection of a lampholder or similar item is not to be considered means for the support of a xture. 9.2 A tting provided with means for the support of a ceiling-suspended (paddle) fan shall have strength and rigidity for the purpose as evaluated by means of the tests described in the Ceiling-Suspende

49、d Fan Support, Section 16. 10 Wiring Devices 10.1 A receptacle shall be secured to the raceway base by a positive means such as a minimum of two screws or rivets. Exception: A snap-t or other non-positive securement means shall be used only when it complies with the Receptacle Secureness Test, Section 19. 10.2 A receptacle shall comply with all of the applicable requirements in the Standard for Attachment Plugs and Receptacles, UL 498. A ush switch shall comply with